__replace__ on manually created AST objects has too many required arguments

[JelleZijlstra]

Bug report

Bug description:

This should work but doesn't:

>>> fd=ast.FunctionDef(name="hi", args=[])
>>> fd
FunctionDef(name='hi', args=[], body=[], decorator_list=[], returns=None, type_comment=None, type_params=[])
>>> fd.__replace__()
Traceback (most recent call last):
  File "<python-input-16>", line 1, in <module>
    fd.__replace__()
    ~~~~~~~~~~~~~~^^
TypeError: FunctionDef.__replace__ missing 2 keyword arguments: 'returns', 'type_comment'.

cc @srittau

CPython versions tested on:

3.14

Operating systems tested on:

No response

Linked PRs

• gh-133783: Fix __replace__ on AST nodes for optional attributes #133797
• [3.14] gh-133783: Fix __replace__ on AST nodes for optional attributes (GH-133797) #133842

[picnixz]

Considering I implemented copy.replace() for AST (in #121162), it might be my fault.